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style="white-space: normal;"><span style="font-size: 18px;"></span><strong style="font-size: 18px;">電話：18876846620 陳經理</strong></p><p style="white-space: normal;"><span style="font-size: 18px;"><strong> 18100963032</strong></span></p><p style="white-space: normal;"><span style="font-size: 18px;"><strong>網址：</strong></span><a href="http://www.dginstrument.com/" _src="http://www.dginstrument.com" style="font-size: 18px;"><strong>www.dginstrument.com</strong></a></p><p style="white-space: normal;"><span style="font-size: 18px;"><strong>地址：?？谑心虾４蟮琅c長彤路交叉路口</strong></span></p><p><br/></p> </div> </div> </div> <div class="page-message-img"> <a href="http://www.dginstrument.com/inquiry/"><img src="http://www.dginstrument.com/data/upload/201908/20190819160028_346.png" alt=""></a> </div> </div> </div> <div class="page-wrap-right"> <div class="xypg-right-content">  <div class="xypg-news-detail"> <h1 class="xypg-detail-title">?？诶瓘澕庸S之型材拉彎的介紹</h1> <div class="xypg-detail-info-bar"> <div class="detail-info-time"><i class="icon-font icon-shijian"></i>2019-12-20 12:15:18</div> <div class="detail-info-numbers"><i class="icon-font icon-chakan"></i><script src="http://www.dginstrument.com/source/include/browse.php?model=news&id=411"></script>次</div> </div> <div class="xypg-detail-con"><p style="text-indent: 28px"><span style=";font-family:宋體;font-size:14px"><span style="font-family:宋體">拉彎加工廠之型材拉彎的特點如下：</span></span></p><p style="text-indent: 28px"><span style=";font-family:宋體;font-size:14px">1.<span style="font-family:宋體">能夠成形屈強比大的型材彎曲零件。</span></span></p><p style="text-indent: 28px"><span style=";font-family:宋體;font-size:14px">2.<span style="font-family:宋體">能夠成形空間結構復雜的型材零。</span></span></p><p style="text-indent: 28px"><span style=";font-family:宋體;font-size:14px">3.<span style="font-family:宋體">具有不同工藝方法相結合的綜合成形特點。 </span></span></p><p style="text-indent: 28px"><span style=";font-family:宋體;font-size:14px">4.<span style="font-family:宋體">彎曲精度高，回彈小。</span></span></p><p style="text-indent: 28px"><span style=";font-family:宋體;font-size:14px"><span style="font-family:宋體"><a href='http://www.dginstrument.com//' target='_blank' class='key_tag'><font><strong>海南拉彎</strong></font></a>加工廠因此型材拉彎在工業、汽車、飛機型材彎曲件的生產中得到了非常廣泛的應用。</span> <span style="font-family:宋體">在飛機生產中，飛機框肋上的緣條、機身前后段、發動機短倉的長桁等尺寸大的型材彎曲件是組成飛機骨架的關鍵零件，并直接影響到飛機的氣動力外形，形狀精度要求很高。在汽車生產中，拉彎主要用于加工車身結構和保險杠的中空鋁型材彎曲件，在保持與鋼鐵制件同樣的抗沖擊強度條件下，能減輕車體重量，降低使用成本。拉彎工藝可實現鋁型材的高精度彎曲，但由于拉彎成形中可能會出現壁厚減薄破裂、起皺、截面畸變等成形缺陷，而這些成形缺陷與型材的材料性能、截面形狀及工藝參數這些因素密切相關，非常復雜。彎是Z常用的彎曲方法。壓彎設備大多為通用的機械壓力機或液壓機，也有用專用折彎壓力機的。</span></span></p><p style="text-indent: 28px"><span style=";font-family:宋體;font-size:14px"><span style="font-family:宋體">常用的滾彎設備是卷板機。三輥卷板機按三點決定一圓的道理，對板坯進行連續彎曲。三輥卷板機具有兩個傳動輥（固定）和一個壓下輥（可調）。調節壓下輥的上下位置即可改變它與傳動輥之間的相對距離。拉彎時，板材置于傳動輥和壓下輥之間，傳動輥正反方向交換轉動，使板材往復運動。調節壓下輥使之逐步壓下，即可將板材彎曲成所需曲率的圓柱面、圓錐面和曲率較小的雙曲面。壓下輥一端可升起，便于卸出工件。另外還有四輥和多輥卷板機，四輥卷板機用于卷制厚板圓筒，四輥以上的多輥卷板機，用多對輥子將板材逐漸彎曲成復雜的型面。</span></span></p><p style="text-indent: 28px"><span style=";font-family:宋體;font-size:14px"><span style="font-family:宋體">對于精度要求較高，拉彎加工廠長度和曲率半徑要求較大、橫向尺寸要求較小的彎曲件，可在專用的拉彎機上進行拉彎。拉彎時，板材全部厚度上都受拉應力的作用，因而只產生伸長變形，卸載后彈復引起的變形小，容易保證精度。</span></span></p><p style="text-align: center;"><img src="/data/upload/201912/1576809576185093.jpg" title="?？诶瓘?jpg" alt="?？诶瓘?jpg" width="800" height="800" border="0" vspace="0" style="width: 800px; height: 800px;"/></p></div> <div class="xypg-detail-tags"> <div class="tags-title"> <h3>標簽</h3> <div class="baidu-share">  <div class="bdsharebuttonbox"> <a href="#" class="bds_more" data-cmd="more"></a> <a href="#" class="bds_tsina" data-cmd="tsina" title="分享到新浪微博"></a> <a href="#" class="bds_weixin" data-cmd="weixin" title="分享到微信"></a> <a href="#" class="bds_sqq" data-cmd="sqq" title="分享到QQ好友"></a> <a href="#" class="bds_isohu" data-cmd="isohu" title="分享到我的搜狐"></a> <a href="#" class="bds_tqq" data-cmd="tqq" title="分享到騰訊微博"></a> <a href="#" class="bds_fbook" data-cmd="fbook" title="分享到Facebook"></a> </div> 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